.banner {
    height: 460px;
    width: 1226px;
    position: relative;
}
.banner img{
    height: 460px;
    width: 1226px;
}
.banner-pointer{
    width: 40px;
    height: 70px;
    text-align: center;
    line-height: 70px;
    color: #b8c3cb;
    position: absolute;
    top: 50%;
    margin-top: -35px;
    cursor: pointer;
}
.banner-pointer i{
    font-size: 30px;
}
.banner-pointer-left{
    left: 234px;
}
.banner-pointer-right{
    right: 0;
}
.banner-pointer:hover{
    color: #fff;
    background-color: rgba(0,0,0,.5);
}

.banner-dots{
    position:absolute;
    right: 30px;
    bottom: 30px;
}
.banner-dots span{
    width: 10px;
    height: 10px;
    margin: 0 4px;
    background-color: rgba(0, 0, 0, .4);
    border: 2px solid rgba(255,255,255,.3);
    cursor: pointer;

    border-radius: 50%;
}
.banner-dots span.selected{
    border: 2px solid rgba(0, 0, 0, .4);
    background-color: rgba(255,255,255,.3);
}

/* 横幅-菜单 */
.banner-menu {
    width: 234px;
    height: 100%;
    background: rgba(105, 101, 101, 0.6);
    position: absolute;
    left: 0;
    top: 0;
    padding: 20px 0;
  }
  .banner-menu-item {
    color: #fff;
    padding: 0 20px 0 30px;
    height: 42px;
    /* outline: 1px solid; */
    line-height: 42px;
    cursor: pointer;
  }
  .banner-menu li:hover .banner-menu-item {
    background: #ff6700;
  }
  .banner-menu li:hover .banner-sub-menu {
    display: block;
  }
  
  /* 子菜单 */
  .banner-sub-menu {
    position: absolute;
    top: 0;
    left: 234px;
    width: 992px;
    height: 100%;
    background: #fff;
    /* outline: 1px solid; */
    border: 1px solid #eee;
    display: none;
  }
  .banner-sub-menu a {
    width: 25%;
    height: 16.666%;
    padding: 0 20px;
  }
  .banner-sub-menu img {
    width: 40px;
    height: 40px;
    margin-top: 17px;
    margin-right: 12px;
  }
  .banner-sub-menu span {
    width: 154px;
    margin-top: 28px;
  
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }
   